Cement-brick machine.



D. B. SMITH.

CEMENT BRICK MACHINE; APPLICATION FILED SEPT. 12, 19 10.

Patented May 9; 1911 3 SHEETS-SHEET 1.

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D. B.'SMITH. CEMENT BRICK MACHINE.

APPLICATION FILED SEPT. 12, 1910.

3-SHEETS-SHBET 2;

THE Nanms PETERS cm, WASHINGTON, o. c.

D. B. SMITH. CEMENT BRICK MACHINE.

APPLIOATION- FILED SEPT. 12, 1910.

- Patented May 9, 1911.

3 SHEETS-SHEET 3.

Fi KB-A DAVID B. SMITH, OF MOUNT HEALTHY, OHIO.

CEMENT-BRICK MACHINE.

Specification of Letters Patent.

Patented May 9, 1911.

Application filed September 12, 1910. Serial No. 581,576.

To all whom it may concern:

Be it known that I, DAVID B. SMITH, a citizen of the United States ofAmerica, and resident of lsfilount Healthy, county of Hamilton, andState of Ohio, have invented certain new and useful Improvements inGement-Brick Machines, of which the following is a specification.

It is desirable in manufacturing cement bricks to use a mixture whichcontains a comparatively large proportion of water, in order to insure athorough crystallization of the cement. In removing a wet brick from themold, when a wet mixture is used, the faces of the bricks are roughened,if the wall of the mold is drawn directly away from the brick. If thewall of the mold be drawn away from the brick, by a sliding or trowelingmovement, the face remains smooth. In cement brick machines asheretofore constructed, it has been possible to obtain this trowelingmotion upon only a minority of the faces of the bricks.

The object of my invention is a cement brick machine, in which the majorproportion of the faces of the bricks are separated from the walls ofthe mold by a troweling motion.

A further object of the invention is a cement brick machine in which aricher miX may be used in the front face of the brick than in the backthereof.

This object is attained by the means described in the specification andillustrated in the accompanying drawings.

Figure 1 is a front elevation of a cement brick machine embodying myinvention, the parts being shown in the position they occupy after themold has been filled with cement, and the pallet has been clamped upontop of the mold preparatory to inverting it. Fig. 2 is an end elevationof the same, the dotted lines showing the position of the mold which isillustrated in Fig. 1, and the full lines showing the position of themold after it has been inverted, and prior to the time at which thepartitions are drawn out of the mold. Fig. 3 is a plan view of themachine, showing the mold in its inverted position, with the bottomplate and partitions withdrawn from the mold, and with the wet bricks inplace in the mold, preparatory to their being elevated above the mold bythe elevation of the pallet. Fig. 4 is an end elevation, showin thepartitions withdrawn from the mold: the pallet elevated,

and the bricks resting thereupon above the mold. Fig. 5 is a perspectiveview of the frame of the mold, in its normal position, but with thebottom plate and partitions removed. Fig. 6 is a. sectional view takenupon line 6-6 of Fig. 1, but upon an enlarged scale, and with parts ofthe table broken away, and with the levers omitted.

Themold consists of a frame A, which has an open top and bottom, and hasa side, a, with a series of vertical slots, a, in com bination with abottom plate B, which has secured to it a series of partitions, b, whichare spaced apart a distance equal to that between the slots, a, and of aremovable top plate or pallet I), which is of a size to fit between thesides of the frame. The mold is supported upon a table E, which has atits ends brackets e, e, which have journal slots 6 in which rest journalpins which are secured to the frameA, and about which the mold isrevolved in changing it from its normal to its inverted position. Thetable is provided with elevating rods F, F, which are adapted to contactwith the pallet, when the mold is inverted. Mounted upon the table arelevers G, G, which are connected by links to the partitions forwithdrawing them from the mold, and levers H, H, which are connected tothe elevating rods for raising them to carry the pallet up through themold, to remove the bricks therefrom.

I will now describe the parts in detail Frame A has transverse ways a(0*, formed by angle irons a a, in which slide horizontal transverseledges 12, Z2 which are formed upon the end partitions, 6. Frame A hasupon its side a a series of slots a into which the ends of thepartitions pro-- ject, when the mold is closed. Frame A ias mounted uponit transverse rods 70, 72, upon which are secured wedges K, K, forclamping the pallet D in place.

The bottom plate B consists of a series of channel irons between whichthe partitions are placed and bolted by means of longitudinal bolts 6Through the outer ends of the partitions a screw threaded rod B ispassed, said rod being provided with a series of adjusting lock nuts 6for holding the partitions firmly in place in relation to each other.The end partitions have blocks m, m, mounted upon the ledges b, and uponwhich look bars M, M, are pivoted. These lock bars M have enlarged endsm which in the closed position of the mold are adapted to engage withthe side a of the frame, and thus to lock the partition and the bottomplate firmly to the frame.

Elevating rods F, F, are connected t0-. gether by a frame f, which restsupon the table in a position such that it registers with the pallet 1),when the mold is inverted. Elevating rods F, F, are connected to the elevating rods H, H, by links 7, f 7, the links 7 being pivoted upon thelegs of the table. Levers Gr and G are connected to the end partitions bby rods g, g, the latter of which are pivoted upon the ends of the tableE.

In operation :-The mold first is placed in a position resting upon thelongitudinal bars A, A, of the table, and with bottom plate B closingthe bottom of frame A and partitions Z) within the frame between slots aand a and with the top plate D removed. Cement is then filled into themold. If it be desired to make a brick having a richer mix in the frontface, a layer of this mix of cement is put in the mold to cover plate Bto the thickness desired. Then the body cement is filled in and pressedinto place. Pallet I) is then placed upon top of the mold and is clampedin place by wedges K, K. The lock bars M, M, being engaged with sides athe mold revolved about brackets e, e, to an inverted position with thepallet I) resting upon frame f of the elevating rods. The revolution ofthe mold, as illustrated, is to be effected by hand. The parts thenoccupy the position shown in Fig. 2. Bars M, M, are then disengaged fromframe A, and levers G, G, are depressed, thus withdrawing the partitionsfrom the mold, as shown in Figs. 3 and 4. Levers H, H, are thendepressed, raising rods F, F and forcing pallet D upward through themold and elevating the bricks above the top thereof, a position fromwhich they may be re moved to a place in which they dry.

In withdrawing the partition and plate B from the mold, the front faceand the two sides of the bricks are troweled. In carrying the pallet upthrough the mold, both ends of the bricks are troweled. Thus the onlyface of the bricks which is not troweled is that which rests upon thepallet. This face is the one which forms the back of the brick.

vVhat I claim is l. A mold for cement bricks consisting of a frame withan open top, an open bottom and a side with a series of vertical slots,a reciprocating bottom plate, a series of transverse vertical partitionssecured to the bottom plate and adapted to slide through the slots inthe side of the frame, a pallet or top plate adapted to slide betweenthe sides of the frame and a means of clamping the pallet upon top ofthe frame and the partitions, the said mold being adapted to be invertedfor the removal of the bricks.

2. In a cement brick machine the combi;

nation of a mold, a table for supporting the mold, a lever forreciprocating the partitions of the mold and an elevating rod forremoving the bricks from the mold, the mold consisting of a frame withan open top, an open bottom and a side with a series of vertical slots,a reciprocating bottom plate, a series of transverse vertical partitionssecured to the bottom plate and adapted to slide through the slots inthe side of the frame, a pallet or top plate adapted to slide betweenthe sides of the frame and a means of clamping the pallet upon top ofthe frame and the partitions, the model being ournaled upon the tableand revoluble thereon from an upright to an inverted position, theelevating rod being mounted upon the table and contacting with the topplate when the mold is inverted, and the partitions being engaged by thelevers for simultaneously removing them from the mold.

DAVID 13. SMITH. Vitnesses WALTER F. MURRAY, BERTHA It. Knorr.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Eatents, Washington, D. C.

It is hereby certified that in Letters Patent No. 991,553, granted May9, 191i,

upon the application of David B. Srnith, of Mount Healthy, Ohio, for animprovement in Cement-Brick Machine's, an error appears in the printedspecification requiring correction as follows: Page 2, line 81, the wordmodel shonld read mold; and that the said Letters Patent shonld be readwith this correction therein that the same may conforin to the record ofthe case in the Patent Oflice.

Signed and sealed this 6th day of June, A. D., 1911.

[SEAL] G. C. BILLINGS,

Acting Commissioner of Patents.

